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Southern blue gum
Southern blue gum (Eucalyptus st. johnii)

Family: Myrtaceae

Common names: Southern blue gum

Distributed in: Australia (Oceania and S.E. Asia)

Distribution overview: Australia

Environment profile: Status has not been officially assessed

Tree size: Tree height is 40-50 m

Colors: the heart isPink, Redand the sapwoodWhite, Yellow.The grain isInterlocked, the textureDescribed as open

Natural durability: Non-durable, Perishable

Drying Defects: Moderate collapse and honeycombing, Moderate surface checking

Ease of Drying: The timber is rather difficult to dry without degradation. Quartersawn material is reported to degrade to a lesser degree. Partial air-drying before kiln-drying has been recommended

Boring: Fairly difficult to very difficult

Cutting Resistance: Fairly Difficult to Very Difficult to saw

Response to hand tools: Fairly Difficult to Difficult to Work

Steam bending: Can be bent to a radius of ,6 inches (15 cm)



  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 961 kg/m3
Bending Strength 840 1460 kg/cm2
Crushing Strength 75 136 kg/cm2
Hardness 1146 kg
Impact Strength cm
Shearing Strength 163 kg/cm2
Stiffness 148 203 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness 264 cm-kg
Static Bending 522 923 kg/cm2
Item Green Dry English
Bending Strength 11956 20776 psi
Crushing Strength 1073 1945 psi
Density 60 lbs/ft3
Hardness 2528 lbs
Maximum Crushing Strength 6056 11760 psi
Shearing Strength 2323 psi
Static Bending 7438 13132 psi
Stiffness 2117 2891 1000 psi
Toughness 230 inch-lbs
Specific Gravity 0.65 0.79


Bolza, E., Kloot, N. H. 1963. The Mechanical Properties of 174 Australian Timbers. Technological Paper No. 25. Division of Forest Products, Center for Scientific and Industrial Organization (CSIRO, Melbourne, Australia.Hillis, W.E. and A.G. Brown, Editors. 1984. Eucalyptus for Wood Production. Commonwealth Scientific and Industrial Research Organization, Academic Press, Australia.
*Come interpretare i dati (manleva su eventuali imprecisioni)